About 11.5 minutes into flight, i was bringing the 3DR solo in to land and the copter rolled and pitched pretty hard to one side. the ATT logs for pitch and roll deviated from desired, so seems like a motor stopped briefly then the copter stabilized.
Aside from ESC or a motor failure what could cause this? improperly calibrated Remote? PWM signal too low? esc not properly calibrated? how do you calibrate the esc on a solo